Low Energy Electron Inelastic Mean Free Path

guiding_light

13th February 2008 - 12:49 AM

Just found this paper, published in 2006:

Applied Radiation and Isotopes
Volume 64, Issue 5, May 2006, Pages 543-550

"Electron inelastic mean free path formula and CSDA-range calculation in biological compounds for low and intermediate energies"

Ayşegül Akar, Hasan Gümüş and Nazmi T. Okumuşoğlu

Low-energy (<20 eV) electrons go surprisingly far in biological tissue: >100 nm in water.

Enthalpy

13th February 2008 - 02:36 PM

Anybody describing 100nm as "far" is suspected of working on semiconductors...

guiding_light

18th February 2008 - 02:50 AM

Actually synapses can be pretty small gaps too...

yor_on

7th March 2008 - 07:44 PM

the brain is incredibly impressive.
And sturdy too.

guiding_light

20th March 2008 - 03:42 PM

QUOTE (guiding_light+Feb 13 2008, 12:49 AM)

Low-energy (<20 eV) electrons go surprisingly far in biological tissue: >100 nm in water.

Apparently, some inorganic compounds also...

Escape length of ultraviolet induced photoelectrons in alkali iodide and CsBr evaporated films: Measurements and modeling
J. Appl. Phys. 84, 2890

The abstract says the escape length of electrons photoinduced from thin CsI, KI, RbI, NaI, and CsBr evaporated films was measured in the 140–180 nm wavelength range to be between 10 and 40 nm.

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